22171016430440 has 16 divisors (see below), whose sum is σ = 49884786968580. Its totient is φ = 8868406572160.

The previous prime is 22171016430427. The next prime is 22171016430443. The reversal of 22171016430440 is 4403461017122.

It can be written as a sum of positive squares in 2 ways, for example, as 22165094512324 + 5921918116 = 4707982^2 + 76954^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22171016430440.

It is not an unprimeable number, because it can be changed into a prime (22171016430443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277137705341 + ... + 277137705420.

Almost surely, 2^{22171016430440} is an apocalyptic number.

22171016430440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22171016430440 is an abundant number, since it is smaller than the sum of its proper divisors (27713770538140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22171016430440 is a wasteful number, since it uses less digits than its factorization.

22171016430440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554275410772 (or 554275410768 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

Adding to 22171016430440 its reverse (4403461017122), we get a palindrome (26574477447562).

The spelling of 22171016430440 in words is "twenty-two trillion, one hundred seventy-one billion, sixteen million, four hundred thirty thousand, four hundred forty".